Introduction:Flat White, as a widely popular milk coffee, has long been debated over the ideal thickness of its milk foam — minor differences ranging from 0.3 to 0.5 centimeters actually reflect varying interpretations of this drink across different countries. This article delves into the origins and evolution of Flat White, explores the definitional distinctions between New Zealand and Australia, examines how thinner foam impacts flavor expression, and uncovers the technical reasons why some cafés opt out of latte art. It helps readers better understand what makes a high-quality Flat White truly great.

Have you ever had this experience? When a steaming cup of milk coffee is placed in front of you, you can’t help but guess what pattern the barista has carefully poured — a heart, a leaf, or perhaps a whimsical animal? This element of delightful surprise is precisely what makes latte art so captivating to many coffee enthusiasts. However, many customers also notice that some cafés do not offer latte art when serving Flat White, leaving those hoping for a photo opportunity slightly disappointed.

How thick should the milk foam in a Flat White really be? Why can’t you get a latte-arted Flat White at certain cafés? In truth, it’s not just a matter of technical trade-offs — it also involves the historical background of Flat White itself, the brewing philosophies of different regions, and a commitment to showcasing flavor. Next, we’ll start with the birth of the Flat White and explore step by step what makes this classic coffee unique.

As for the origins of the Flat White, opinions remain divided, with both Australia and New Zealand claiming to be its birthplace, each holding firm to their own narrative. What is certain, however, is that since the 1980s, this coffee has gradually gained prominence in cafés across the United States and around the world, becoming a daily choice for many consumers.

Looking back to the post-WWII era, as Italian immigrants brought espresso machines to Australia, coffee shops serving freshly ground espresso began to emerge in immigrant communities, and local youths quickly fell in love with this new style of drink. However, traditional Italian cappuccinos often featured milk foam as thick as 2 to 3 centimeters, which many found too heavy. They desired a version with thinner foam and a more pronounced coffee flavor. Through continuous adjustments, the foam gradually became “slimmer,” flattening out and hugging the liquid surface right up to the rim of the cup — this is the now-familiar “Flat White.”

Interestingly, even though everyone calls it Flat White, its appearance can vary greatly from one country to another, or even from one barista to another. Ultimately, this comes down to differing definitions of what an “ideal” Flat White should be. The core essence lies in crafting a milk coffee with non-heavy, smooth-textured foam that still highlights a rich coffee aroma, achieving a perfect balance between foam and coffee liquid, and enjoying it before the foam begins to separate.

In New Zealand, baristas typically use a smaller cup size than that of a latte — around 150 milliliters — and insist on using a double ristretto as the base. This approach increases the proportion of coffee while reducing the amount of milk, thereby bringing out a stronger coffee flavor.

In contrast, in Australia, most baristas believe it’s sufficient to maintain thinner foam compared to a latte, so they often use the same cup size as a latte — about 200 milliliters. They place more emphasis on the difference in foam thickness rather than changes in cup size or coffee quantity. Under fixed proportions, many cafés experiment with different coffee bean and milk combinations to find the most suitable flavor profile.

Especially in Melbourne — a city where over 90% of cafés are independent — many shops take it a step further by using a double ristretto as the base, paired with a 150-milliliter cup and milk foam similar in thickness to that of a latte. A ristretto is made with the same amount of coffee grounds but yields a smaller volume of coffee, essentially a more concentrated version of espresso, delivering a more intense and focused flavor while also demanding higher quality beans. This method showcases the unique character of the beans more clearly and is one of the strategies many cafés use to stand out in a competitive market.

Additionally, many cafés offer a variety of milk options, including whole milk, low-fat milk, soy milk, oat milk, and almond milk, further enriching the flavor layers of a Flat White. One café, when crafting its own version of Flat White, uses a Warm Sun blend espresso bean, pairs a double ristretto with whole fresh milk, and keeps the cup size around 200 milliliters, resulting in a rich yet balanced taste.

So, should a Flat White be served with latte art? Actually, this is closely related to the thickness of the milk foam. Thin and velvety foam is one of the key features that distinguish Flat White from a latte or cappuccino. This kind of foam enhances the smooth texture of the coffee liquid, creating a silky “velvet” mouthfeel, allowing consumers to focus more on the inherent flavors of the coffee itself.

In the early days when Flat White was not yet widely known, there was no clear standard for its foam thickness — as long as it was thin enough and well-integrated with the coffee, it was acceptable. However, as this coffee grew in popularity, in order to clearly differentiate it from regular lattes and cappuccinos, the industry gradually defined the foam thickness of a Flat White as being within0.3 to 0.5 centimeters. It’s worth noting that the thinner the foam, the more likely it is to sink into the coffee liquid during the pouring process, lacking enough buoyancy to support surface patterns. Attempting to pour latte art under these conditions can easily result in white foam dispersing and patterns becoming blurry and indistinct — which is why many skilled baristas choose not to pour art at all. Of course, with exceptional technique, even at this thickness, intricate designs can still be created.

Next time you order a Flat White at a café, try chatting with the barista to learn about their interpretation of this drink and the flavor story they aim to convey through it. After all, whether or not it features latte art, the ultimate goal is to serve a satisfying “Flat White.”

The above content is compiled by CoffeeHunters, a coffee news website.